Beater and picker for grain-separators.



No. 675,4l8. Patented June 4, l90l. J. E. SHAVLAND.

BEATEB AND PIGKEB FOR GRAIN SEPABATORS.

(Application filed In. 30, 1899.)

(No Model.)

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UN TTED STATES PATENT OFFICE.

JOHN E. SHAVLAND, OF ANGUS, MINNESOTA, ASSIGNOR OF TWO-TIIIRDS TO J. F.MONTGOMERY AND G. F. BRIGGS, OF SAME PLACE.

HEATER AND PICKER FOR GRA|N-SEPARATORS.

SEEGEFIGATION "orming part of Letters Patent No. 675,418, dated June 4,1901.

application filed March 30, 1899. Serial No. 711,057. (No model.) I

To (6 whom it may concern:

Be it known that I, JOHN E. SHAVLAND, a citizen of the United States,residing at Angns, in the county of Polk and State of Minnesota, haveinvented certain new and useful Improvements in Beaters and Pickers forGrain- Separators; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates particularly to grainseparators, and has for itsespecial object to provide an improved beater which when brought intothe proper relation to the threshing-cylinder of agrain-threshingseparator is adapted to perform the double function of a grain heaterand picker.

To the above ends my invention consists of the novel devices andcombinations of devices hereinafter described, and defined in the claim.

My invention in its preferred form and arrangementis illustrated in theaccompanying drawings. Therein like characters indicate like partsthroughout the several views.

Figure 1 is a vertical longitudinal section taken through a portion ofan ordinary threshingmachine, the same being provided with my improvedheater and picker. Fig. 2 is a transverse section taken on the line 00 w'of Fig. 1, and Fig. 3 is a detail view looking at a portion of one sideof the separator-frame and showing the means for adjustablysecuring thecrankshaft portion of my improved device against rotation.

In the illustration given, 1 indicates the case or frame, 2 thedeliverydeck, 3 the tooth-threshing cylinder, t the toothed concave, 5the vibratin g separating table or rack, and 6 the vibrating grain-pan,of an ordinary threshing-machine or separator.

As illustrated in the accompanying drawings, myimproved beaterandpickerinvolves a rotary cylindrical drum a,wl1ich is suitably mounted onits end trunnions a, which work in bearings h, suitablysecured to thesides of the separator-case 1. One of the trunnions a of the drum a isextended and provided with a pulley a over which a power-driven belt(not shown) would run to impart rotary motion to said drum. At severalpoints-as shown, at three points-spaced equidistant circumferentially ofthe drum or cylinder a and rigidly secured to the cylindrical shellthereof, are guide-bars (1 At various points longitudinally of thecylinder or drum a the bars a are provided with perforations a, which,for a purpose which will hereinafter appear, are round at their outerextremities and are elongated circumferentially of the drum at theirinner extremities.

Working within the drum 0. is a crankshaft c, the projecting trunnionsor end shaft sections 0 of which are mounted in axial seats in thetrunnions a of the said drum. By some suitable means this shaft 0 c istobe prevented from turning or rotating with the drum a, and, as shown,this is accomplished by means of an arm or lever 0 secured to theprojecting end of one of the trunnions or crank-sections c. This arm 0is preferably made light enough so that it may be sprung slightlysidewise or to and from the case 1, and it is provided with a pin 0which is adapted for engagement with any one of a series of perforationsd, formed in the plate d, rigidly secured to the side of the case 1. Bythis device the crank-shaft may be set and held in different adjustmentscircumferentially of the rotary drum a.

Working through the perforations or seats a of the guide-bars a andpivoted on the ofi set inner section of the crank-shaft o c are threeseries of plunger-like fingers f. These fingersfare provided withpronged heads f at their inner ends, and these heads are mounteddirectly on the said crank-section of the crank-shaft. The three headsof the three fingers or plungers, which stand in line with each othercircumferentially of the drum, are made to overlap, as best shownin Fig.2. Spacing-thimbles g are shown as placed between the sets of heads f.

It is of course evident that all of the fingers fbeing of the samelength and mounted to rotate on an axis located eccentric to the axis ofthe drum they will be projected or extended outward from the drum in thedirection of-the eccentricity of the said crank-shaft and will be drawninward and turned in a reverse direction. By reference to Fig. 1 it willbe seen that the crank portion of the crankshaft is turned directlytoward the toothed threshing-cylinder 3, and hence it of course followsthat the fingers f will be projectedfrom the drum a the greatestdistance when turned directly toward the said threshing-cyl- I inder.The beater is so mounted that the fingers f will pass as closely aspossible to the cylinder-teeth.

In threshing-machines now in general use great difficulty has beenexperienced in getting the beaters or pickers to carry away the' strawdelivered to them by the threshing-cylinders fast enough to preventoveraccumulations behind the threshing-cylinders. By my I, invention thefeeding capacity of the combined picker and beater is made fully equalto that of the threshing-cylinder which delivers thereto, and hencestraw will not accumulate back of the cylinder, but will be fed onwardas fast as delivered to the combined picker and beater.

In virtue of the relative arrangement of my improved beater with respectto the threshing-cylinder it is caused to perform the additionalfunction of a picker to keep the teeth of the threshing-cylinder fromcarrying the straw upward and backward toward the front of theseparator.

The operation of the combined heater and picker above described isobvious, it being understood, of course, thatit is mounted torotate inthe same direction as the threshingcylinder or as indicated by thearrows marked on Fig. -1. The beating fingers or plungers f will, as hasalready been indicated, be projected to their greatest lengths ofprojection through .the drum a when turned toward the cylinder 3, sothat they will exert their greatest efficiency as they are moveddownward froln this position toward the separating table or rack'5, andwhile making this movement they will gradually be drawn back into thedrum a as the work required of them is decreased. By the time that aparticular series of fingers f begins to move upward and away from theseparating-table 5 they will have been drawn nearly or quite within theseats a of the cooperating guide-bar a so that they will have notendency whatever to carry straw upward or over the top of the rotarydrum a. This action is of course very desirable.

It will of course be understood that the socalled combined heater andpicker above described is capable of many modifications in constructionwithin the scope of my invention. For example, the rotary part whichcarries the beating fingers or projections might take various otherforms than that of a cylinder and eccentrics or other devices might besubstituted for the crank-shaft, which serves to cause the said fingersor projections to rotate on an axis eccentric to the drum or carrier. Itwill also be understood that the device may be otherwise used than inconnection with a threshing-cylinder, though it has a particular andimportant relation to the action of a threshing-cylinder. v

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

The combination with the drum or carrier a having the plurality oftapered guide-openings a, of the crank-shaft c, c, mounted within saidcarrier at, the eccentric portion of said crank-shaft being separablefrom the arm portions 0, the plurality of fingers f working through saidperforations a and provided with the bifurcated heads f overlapping andpivoted on the eccentric portion of said crankshaft, and the loosespacing-collars g on the said crank-shaft spacing apart the overlappingsets of heads f, the said heads f and collars g being removable when theeccentric portion of said crank-shaft is disconnected from one or bothof the arm portions, substantially as described.

In testimony whereof I aifix my signature in presence of two witnesses.

JOHN E. SHAVLAND.

Witnesses:

WILLIAM WATTA JACOB JOHNSON.

